blockchain-gas-price-data

Current gas price on an EVM blockchain, read live via a public RPC endpoint (viem) — no API key, no aggregator. Also available as dedicated routes: GET /api/gas/base, GET /api/gas/ethereum. Parameter: ?chain=<base|ethereum>.

Simulate a transaction before signing: runs `eth_estimateGas` for `{ to, from?, data?, value? }` and returns the estimated gas units and estimated fee (current gas price x gas, in wei + ETH). If the node rejects the call it returns `ok:false` with the decoded `revertReason` (why it would fail) instead of erroring. Reads live on-chain state with automatic endpoint fallback.

Live gas price on BNB Chain, Polygon, Arbitrum, Base, Avalanche and Optimism, converted to USD and ranked cheapest-first. Gwei is NOT comparable across chains because the gas token differs in price; USD is the only honest ranking. Returns chains[] with gasPriceGwei, baseFeeGwei, nativeUsd and costUsd for transfer, erc20Transfer and swap, plus cheapest and mostExpensive. Optional ?chain=all or one chain key; 400 unknown_chain otherwise. Send chain=all - a bare call skips the free tier.

Current block number and gas price for Base and Polygon mainnet, fetched live via RPC on every call. Unlike this catalogue's corpus-search listings, this makes a real outbound network call on purchase -- freshness is the product, not a stored snapshot.

Multi-chain gas price oracle: current base fee plus priority-fee tiers for EVM chains. POST /v1/gas with {chain_id} and get the base fee and slow/standard/fast tiers as one JSON object. Deterministic per read instant. Pay per request in USDC; no account, no API key.

Get the current Base gas price and the ETH cost of an ETH, ERC-20 or x402 USDC transfer at that price. Current Base gas: gas price, base fee, priority fee, and the ETH cost of an ETH transfer, an ERC-20 transfer and an x402 USDC settlement at that price. Query: none.

Read the current eth_gasPrice value from a supported public Base, Ethereum, or Arbitrum JSON-RPC endpoint.

Current gas price + base fee for a chain, with an ERC20-transfer cost estimate.

Read current gas price and base fee, live from Base mainnet, for a fraction of a cent. No API key, no account — a wallet is the only requirement, and you are charged only if the read succeeds. Plain unsigned data; the attested version of chain reads is /v1/oracle/onchain. Answers are read at the moment of the call and stamped with the block they came from where applicable.

Suggested maxFeePerGas and maxPriorityFeePerGas from the last 20 blocks of real fee history, at slow, normal and fast percentiles. Beats guessing a gas price and getting stuck in the mempool. Via eth_feeHistory.

Base network gas price and latest block, optionally costed for a transaction size

Ethereum Gas Usage by Transaction Type (Absolute) — The total gas consumed by the Ethereum network by transaction category: Vanilla (pure ETH transfers between EOAs), ERC20 (token calls, excluding stablecoins), Stablecoins (pegged tokens such as USDT, USDC, DAI), DeFi (protocols and DEXs like Uniswap and Aave), Bridges (cross-chain transfers), NFTs (ERC-721/1155 and marketplaces), MEV Bots, and Other. Data by Glassnode.

Mean Transaction Gas Price — The mean gas price paid per transaction. Data by Glassnode.

Median Transaction Gas Limit — The median gas limit per transaction. Data by Glassnode.

Median Transaction Gas Price — The median gas price paid per transaction. Data by Glassnode.

Derived metrics: Ethereum gas price sampled continuously in the background and turned into rolling average, min/max, volatility, and trend direction over a window (?windowMinutes=, default 10) — none of which exist in the raw upstream feed's single instantaneous value.

Current gas price on Base from public RPC (wei + gwei). Optional query network=base for schema probes. e.g. GET /v1/gas/base

Base gas price — current wei/gwei. Cheap read-only chain primitive. Pay-per-call via x402.

Current Base L2 gas prices (fast/standard/slow) from the public Base RPC, cached 10s. Returns wei + gwei. Lowest-latency option for gas bots. — $0.001 USDC/call on eip155:8453. Pay-per-call via x402 — no API key, no account. Free samples daily.

Current gas price, base fee and priority fee in gwei plus the cost of a plain transfer, for Base, Ethereum, Arbitrum, Optimism, Polygon or BSC. $0.01 per call.

Validate a JSON value against a JSON Schema and coerce common LLM-output mistakes (numbers as strings, stringified booleans, scalars where arrays are expected, missing defaults, extra properties). Returns the coerced value plus a structured error report. Built for cleaning up LLM tool-call arguments and structured outputs. POST a JSON body like: {"schema":{"type":"object","required":["name","age"],"properties":{"name":{"type":"string"},"age":{"type":"integer"}}},"data":{"name":"Ada","age":"36"}}

Live gas prices: EIP-1559 base fee plus low/medium/high priority tiers in gwei, and the estimated cost of a simple transfer.

Live gas prices: EIP-1559 base fee plus low/medium/high priority tiers in gwei, and the estimated cost of a simple transfer.

Historical data export: raw Ethereum gas price samples over a date range (?from=, ?to=, ISO 8601, max 24h; ?format=json|csv). Priced at $0.0005/sample (min $0.005) — the real row count for your range, not a flat fee.